Many people have wanted to bring a vehicle to Hungary and put it on the market at least once in their lives. This process is supported by the RegAdo Calculator application. It can be said that in all cases it is necessary to pay the so-called registration tax when we want to localize a foreign car and place it on the market in Hungary. So far, the registration tax could be calculated using different calculators, but as many calculators as we got as many results. The solution to this problem is provided by the RegAdó Calculator application, which always calculates the registration tax to be paid to us in accordance with the current regulations, so that we are aware of our exact costs.